HDR & PhD thesis / Talks

- N. Rougerie, D. Spehner, Interacting bosons in a double-well potential: localization regime,

arXiv:1612.05758 [math-ph]

- W. Roga, D. Spehner, and F. Illuminati, Geometric measures of quantum correlations: characterization,

quantification, and comparison by distances and operations,

J. Phys. A: Math. Theor.**49**(23), 235301 (2016) [PDF (23400 KB)]

- S.A. Reyes, L. Morales-Molina, M. Orszag, and D. Spehner, Harnessing gauge fields for maximally

entangled state generation, Eur. Phys. Lett. 108 (2014), 20010 [PDF (1134 KB)]

- D.
Spehner,
K. Pawlowski, A. Minguzzi, and G. Ferrini,

Effect of one-, two-, and three-body atom loss processes on superpositions of phase states in

Bose-Josephson junctions, Eur. Phys. J. B 87 (2014), 157 [PDF (1652 KB)]

- D. Spehner and M.
Orszag,

Geometric quantum discord with Bures distance: the qubit case

J. Phys. A: Math. Theor.**47**(2014), 035302 [PDF (739 KB)]

- D. Spehner and M.
Orszag,

Geometric quantum discord with Bures distance

New Journal of Physics 15 (2013), 103001 [PDF (496 KB)] - K. Pawlowski, D.
Spehner,
A. Minguzzi, and G. Ferrini,

Macroscopic superpositions in Bose-Josephson junctions: Controlling decoherence due to atom losses

Phys. Rev. A 88 (2013), 013606 [PDF (1924 KB)] - W. De Roeck and
D. Spehner,

Derivation of some translation-invariant Lindblad equations for a quantum Brownian particle,

J. Stat. Phys. 150 (2013), 320 [PDF (1125 KB)] - G. Ferrini, D. Spehner,
A. Minguzzi, and F.W.J. Hekking,

Effect of phase noise on quantum correlations in Bose-Josephson junctions

Phys. Rev. A 84 (2011), 043628 [PDF (320 KB)]

- S. Vogelsberger and D.
Spehner,

Average entanglement for Markovian quantum trajectories,

Phys. Rev. A 82 (2010), 052327 [PDF (320 KB)]

- G. Ferrini, D. Spehner,
A. Minguzzi, and F.W.J. Hekking,

Noise in Bose Josephson junctions: Decoherence and phase relaxation,

Phys. Rev. A 82 (2010), 033621 [PDF (324 KB)]

- D. Spehner and F. Haake,

Quantum measurements without macroscopic superpositions,

Phys. Rev. A 77 (2008), 052114 [PDF (536 KB)].

- D. Spehner and F. Haake,

Decoherence bypass of macroscopic superpositions in quantum measurement,

J. Phys. A: Math. Theor. 41 (2008), 072002 [PDF (244 KB)]. - R.
Rebolledo and D. Spehner,

Adiabatic limits and quantum decoherence, in: ``Stochastic Analysis in Mathematical Physics'',

Proceedings of a Satellite Conference of ICM 2006 (Lisbon, Portugal, 4-8/10/2006), p. 94

Eds. G. Ben Arous, A. B. Cruzeiro, Y. Le Jan and J.-C. Zambrini (World Scientific, 2008) - D. Spehner and F. Haake,

Quantum measurements without Schrödinger cat states,

J. Phys.: Conf. Ser. 84 (2007), 012018 [PDF (964 KB)]

- D. Spehner and M. Orszag,

Cavity QED: a quantum trajectory point of view, Laser Physics 13 (2003), 634-643.

- D. Spehner and M. Orszag,

Temperature-enhanced squeezing in cavity QED,

J. Opt. B: Quantum Semiclass. Opt. 4 (2002), 326-335 [PDF (239 KB), Gzipped PS (293 KB)]. - D. Spehner and M. Orszag,

Quantum jump dynamics in cavity QED, J. Math. Phys. 43 (2002), 3511-3537 [PDF (611 KB)]. - D. Spehner and J.
Bellissard,

The quantum jump approach for infinitely many states, in: ``Modern Challenges in Quantum Optics'',

Lecture Notes in Physics 575, Eds M. Orszag and J.C. Retamal, 355-376 (Springer, 2001) [PDF, PS]

- D. Spehner and J.
Bellissard,

A kinetic model of quantum jumps, J. Stat. Phys. 104 (2001), 525-566 [PDF, PS].

Hopping Transport in Disordered Solids

- A. Faggionato, H.
Schulz-Baldes,
and D. Spehner,

Mott law as lower bound for a random walk in a random environment,

Comm. Math. Phys. 263 (2006), 21-64 [PDF (444 KB),Gzipped PS (439KB)].

- M. Turek, D. Spehner,
S.
Mueller, and K. Richter,

Semiclassical form factor for spectral and matrix element fluctuations of multi-dimensional chaotic

systems , Phys. Rev. E 71 (2005), 016210 [PDF]. - D. Spehner,

Spectral form factor of hyperbolic systems: leading off-diagonal approximation,

J. Phys. A: Math. Gen. 36 (2003), 7269-7290 [PDF (315 KB)]. - R. Narevich and D.
Spehner,

Weyl expansion of a circle billiard in a magnetic field,

J. Phys. A: Math. Gen. 32 (1999), L227-L230 [PDF (107 KB), GZipped PS (119 KB)]. - D. Spehner, R.
Narevich, and A.
Akkermans,

Semiclassical spectrum of integrable systems in a magnetic field,

J. Phys. A: Math. Gen. 31 (1998), 6531-6545 [PDF (220 KB), GZipped PS (152 KB)]. - R. Narevich, D.
Spehner, and A.
Akkermans,

Heat kernel of integrable billiards in a magnetic field,

J. Phys. A: Math. Gen. 31 (1998), 4277-4287 [PDF (161 KB), Gzipped PS (80.6 KB)].

- D.
Spehner, F. Illuminati, M. Orszag, W. Roga, Geometric measures of quantum correlations with

Bures and Hellinger distances, chapter of the book Lectures on General Quantum Correlations and

their Applications, eds. F. Fanchini, D. Soares-Pinto, G. Adesso (Springer, to be published),

arXiv/1611.03449 [quant-ph] - D.
Spehner,

Quantum correlations and distinguishability of quantum states,

J. Math. Phys. 55(7) (special issue: Nonequilibrium statistical mechanics) (2014), 075211 [PDF (1273 KB)]

- D.
Spehner,

Models for Quantum Measurements (lecture notes for the winter school "Aspects of Quantum Dynamics",

Grenoble, 3-7/11/2008) [PDF (540 KB)]

(April 2015, Université Joseph Fourier, Grenoble, France)

(March 2000, Université Paul Sabatier, Toulouse, France)

- January 2016: Quantum correlations, Schrödinger cat states, and decoherence (talk
given at the Colloqium of the

Instituto de Física, Pontificia Universidad Católica de Chile, Santiago) [Slides (PDF)].

- October 2015: Geometry on the set of quantum states and quantum correlations (talk
given at GSI'2015, École

Polytechnique, France) [Slides (PDF)]. - April 2015: Measurements, decoherence, and quantum correlations in composite quantum systems (talk
given for the

defense of my HDR, Grenoble, France) [Slides (PDF)]. - October 2014: Geometric quantum discord (talk
given at the conference "Quantum Optics VII", Mar del Plata, Argentina)

[Slides (PDF)]. - July 2013: Quantum Correlations in bipartite quantum systems (first lecture given at the summer school "Advances in

Open Quantum Systems", Autrans, France) [Slides 1 & 2 (PDF)]. - July 2013: Bipartite systems coupled to two baths: time evolution of entanglement (second lecture given at the summer

school "Advances in Open Quantum Systems", Autrans, France) [Slides (PDF)]. - November
2010: Entanglement evolution
for quantum trajectories (talk
given
at
the conference "Quantum Optics V",

Cozumel, Mexico) [Slides (PDF)].

- March
2007: Mott law for a random walk
in a random medium (talk given
at
the conference ``Transport in

multi-dimensional random Schrödinger operators'', Oberwolfach, Germany) [Slides (PDF)]. - November
2006: Decoherence
in
quantum
measurements (talk
given
at
the``Open System Days'' in

Centre de Physique Théorique, Marseille, France) [Slides (PDF)]. - March
2006: Hopping transport
in Disordered Solids (talk
given at
the conference ``Transport Properties of

random Schrödinger operators'', Lexington, USA) [Slides (PDF)]. - July 2005: Cavity QED: a
Quantum Trajectory Point of View (talk given at the Center for Nonlinear

Phenomena and Complex Systems, Université Libre de Bruxelles, Belgium) [Slides (PDF)]. - June 2004:
Corrélations
spectrales dans les systèmes classiquement chaotiques (talk at the Centre de

Physique Théorique, Marseille, France) [Slides (PDF), in French].

Last modification: May 5, 2016